In the books Harry had a heroes perspective of self sacrifice, he had no self worth, he wasn't the majestic and prideful lion, he was the sick one, that keep the hyenas at bay, putting himself in being less than the pack so it may survive.
In Hazel we have a different mind set, she has a form of self worth, she thirst for knowledge, but she isn't like an eagle that look from on high safely from predators, for the easy to take prey.
She really is a badger, gnawing at the roots of forgotten lore, though skinned and unafraid of dirtying ones fur to reach her truth.